基于新型微分器LC型逆变器有源阻尼控制方法

苑国锋; 葛怀宇

doi:10.19912/j.0254-0096.tynxb.2024-0190

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (6) : 462-469. DOI: 10.19912/j.0254-0096.tynxb.2024-0190

基于新型微分器LC型逆变器有源阻尼控制方法

苑国锋, 葛怀宇

作者信息 +

ACTIVE DAMPING CONTROL METHOD OF LC-TYPE INVERTER BASED ON NOVEL DIFFERENTIATOR

Yuan Guofeng, Ge Huaiyu

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文章历史 +

摘要

针对传统有源阻尼控制方法的微分器存在的相位滞后问题,提出一种基于新型数字微分器的LC型离网逆变器有源阻尼控制策略。该方法设计新的相位补偿器,该相位补偿器可更加准确地补偿后向差分微分器引入的相位滞后,增大系统正向阻尼区间,使电容电压有源阻尼反馈系数有更大的选择区间,提高系统的稳定性和对谐振尖峰的抑制能力。所提出的新型微分器与理想微分器的频率特性更接近,且可基于电容电流反馈的有源阻尼控制方式设计有源阻尼反馈系数。通过仿真以及实验结果证实该方法的可行性与有效性。

Abstract

Aiming at the phase lag problem existing in the differentiator of the traditional active damping control method, an active damping control strategy for LC-type off-grid inverters based on a new type of digital differentiator is proposed in this paper. In this method, a new phase compensator is designed to compensate the phase delay of the backward differential differentiator more accurately, and the forward damping interval of the system is increased. The capacitive voltage active damping feedback coefficient has a larger selection interval, and the stability of the system and the ability to suppress the resonance peak are improved. The novel differentiator proposed in this paper is closer to the frequency characteristics of the ideal differentiator, and feedback parameters can be designed based on the active damping control mode of capacitive current feedback. The feasibility and effectiveness of the proposed method are confirmed by simulation and experimental results.

导出引用

苑国锋, 葛怀宇. 基于新型微分器LC型逆变器有源阻尼控制方法[J]. 太阳能学报. 2025, 46(6): 462-469 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0190

Yuan Guofeng, Ge Huaiyu. ACTIVE DAMPING CONTROL METHOD OF LC-TYPE INVERTER BASED ON NOVEL DIFFERENTIATOR[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 462-469 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0190

中图分类号： TM464

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